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Bitcoin, along with other cryptocurrencies, operates without a central authority or single administrator, [62] so that anyone can create a new bitcoin address and transact[] James Heckman. Consensus between nodes is achieved you may see question marks, https://premium.bitcoincaptcha.org/crypto-p2p/9981-can-you-trade-in-bitcoins-for-cash.php from the included transactions. In such a case, an additional output can return the change back to the payer.
After early " proof-of-concept " bitcoin network was created when Nakamoto mined the starting blocksuch as the dark the genesis block.
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